Saw-swage.



E. G. PILSTRUP.

SAW SWAGE. 4 APPLICATION FIL ED 11110.21, 1908. 1,043,817. Patented Nov. 12, 1912.

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K. $1 MW E. G. PILSTRUP.

SAW SWAGE. v V PPPPPPPPPPPPPPPP 13 0.21, 1908. 1,()43,817 1 Patented Nov. 12,1912. 2 SHEETS-SHEET 2.

COLUMBIA PLANDORAPH CO.,WASHINGTDN D C UNTTED %TATE% PATENT OFFTQE.

EDDIE C. FILSTRUP, OF BENTON HARBOR, MICHIGAN, ASSIGNOR TO COVEL MANUFAC- TURING COMPANY, OF BENTON HARBOR, MICHIGAN, A CORPORATION OF ILLINOIS.

SAW-SWAGE.

Specification of Letters Patent.

Patented Nov. 12, 1912.

T 0 all whom it may concern:

Be it known that I, EDDIE O. FILs'rRUP, a citizen of the United States of America, and resident of Benton Harbor, Michigan, have invented a certain new and useful Improvement in Saw-Swages, of which the following is a'specification.

My invention relates to improvements 1Il saw swaging devices, and has for its ob ect the production of a device by the use of which a greater uniformity of result may be attained than heretofore.

A further object is the production of a device in which adjustable spring means are used in combination with the other parts of the machine, and a new and useful result obtained.

A further object is the production of a decive which is cheap and of simple construction, and one that is not apt to get out of order.

These and such other objects as are attained by my device are illustrated in the accompanying drawings, in which Figure 1 represents a side elevation of my device. Fig. 2 represents a sectional view on the line 2-2 of Fig. 1, looking in the direction indicated by the drawings. Fig. 3 represents a top plan view of Fig. 1. Fig. 4 represents a bottom plan view of a portion of Fig. 3. Fig. 5 represents a sectional view on the line 55 of Fig. 4. Fig. 6 is adetail view.

Like numerals of reference indicate like parts in the severalfigures of the drawings.

Referring now to the drawings,-6 represents the main barrel of the swage having an interior chamber 7 and slotted on the bottom as shown at 8, dividing the lower portion of the barrel into members 9 and 10. An arm 11 is preferably mounted on the barrel at 12 carrying a shoe 13 on its in turned end 14. This shoe is free to move on its bearing and is clamped in any desired position by means of a set-screw 15 passing through the top of the shoe and against the bearing 14. On the opposite side of the barrel a second arm 16 is secured, the base 17 0f the arm conforming to the contour of the barrel and secured thereto by means of bolts 18. A bolt 19 passes through the end of the arm. The inner portion of the bolt-head '20 is cut away on opposite sides, forming a rectangular portion 21 as shown in Fig. 6. The member 21 forms a bearing for the spring bracket or shoe 22.

The shoe 22 comprises an upright frame or standard 23 slotted at 24. On either side of the upright, arms 25 project preferably at right angles, and the base 26 also extends outwardly, forming supports or lugs 27, and a pair of guiding flanges 28. A hearing plate 29 is fitted to slide between the flanges 28 and is provided with a pair of posts 30 adapted to pass through holes in the lugs 27. These posts are threaded at their ends and nuts 31 limit the downward movement of the posts 30 through the lugs 27.

A bolt or thumb-screw 32 passes through the center of the plate 26 the end 83 of which thumb-screw forms a stop to limit the upward movement of the plate. On the ends of the plate 29 are pins or bosses 34. A pair of springs 36 fit over the end 37 of the screw bolt and the boss 84 and washers 88 are introduced between the top of the spring and the arm 25. The swage is secured to a saw 39 by means of a screw-bolt 40 passing into the barrel terminating in a bearing end 41. and adapted to clamp the saw blade between it and the end 42 of an abutment bolt 43. The bolt 40 is operated by the crank arm or lever 44 rigidly secured to the end of thebolt.

On the opposite side of the barrel is mounted a guiding casting 45 having a slot or way 46 formed on the arc of a circle with in which are mounted a pair of movable stops 47. The swage die shaft 48 passes through the barrel and is flattened within the barrel, forming a die face 49, clearly shown in Fig. 5. Outside the barrel the handle or lever 50 is loosely mounted on the shaft 48. Outside of this lever a second adjusting casting 51 is rigidly mounted provided with a circular groove 52. A bolt 53 passes through the groove 52 and into the lever 50. A washer 54 fits between the head of the bolt and the face of the casting 51, whereby the lever and casting may be clamped together.

The barrel is provided witlra threaded passage 55 within which is fitted a bolt 56. The bolt is provided with an extended end 57 adapted to engage the back 58 of the anvil 59 which also is adapted to move within the passage 55, a supplemental bearing pin 60 being provided to insure accurate adjustment of the anvil 59 at the bearing face of the anvil, and is adapted to rest tightly against the top of the tooth.

t will be noted that the swage die 48 is held in place by means of the lock 61 en gaging a circumferential slot. A second slot 63 permits a longitudinal adjustment. The fact that the casting 51 is rigidly scoured to the swage die shaft permits the adjustment of said die to any desired position with respect to the lever 50, and determining accurately the position of the die face 49 at the commencement of the stroke, and the adjusting stops 47, on the casting 45 may be. moved nearer together or farther apart, thus shortening or lengthening the stroke of the lever, as desired.

In the operation of the swage, the barrel is placed over the saw as shown in Fig. 1, the bearing face of the anvil resting against the back of the tooth at the desired point, so that the tooth will be brought between the anvil and swage die when the lever is pushed forward. The shoe 13 is secured rigidly in place and the spring bracket or tail-piece 22 adjusted to the desired tension. The adjustability of this spring member of the bracket is the most important feature of my device, as this bracket is so arranged as to permit the barrel to tip slightly forward as the tooth is being swaged, thus bending the tooth a little forward and in a position to be faced by the emery wheel by a light grinding. In other words, it regulates the impact of the die against the tooth.

Too much stress cannot be laid upon the fact of the adjustability of the spring in the bracket 22, whereby the tool may be adjusted to do the best work on any desired saw. By screwing down the screw-bolts 35. the bracket can be made practically rigid as against any ordinary strain; or, again, the screws may be so adjusted that the shoe will yield upon slight force being exerted.

The use of the spring bracket also eliminates all undue shock from the tool, and prevents the tool from exerting too great a downward pressure upon the back of the bearing teeth upon which it rests, this ultimate pressure being limited to the actual Weight of that portion of the tool plus the resistance of the spring,or such portion of the impact as is not taken up by the spring, and the spring, therefore, may be adjusted to take care of existing conditions.

In the interests of brevity, I have termed those teeth upon which the bracket 22 rests during the swaging operation as bearing teeth, differentteeth occupying that relation as the tool is moved along the saw.

I claim:

1. In a saw swage, the combination with a barrel, a swage die, a lever for operating said die, means for securing said swage in position, and spring means for regulating the impact of said die against the tooth under treatment and the strain on the top of the bearing teeth, said means comprising an adjustable bracket plate terminating in guide clamps, a pair of arms extending from said bracket, a movable plate carried by the base of said bracket, and spring means uniting the ends of said plate and arms. V

2. In a saw swage, the combination with a barrel, a swage die, a lever for operating said die, means for securing said swage in position, spring means for regulating the impact of said die against the tooth under treatment and the strainon the top of the bearing teeth, comprising a bracket, a stationary bearing plate and a movable bearing plate secured thereto, said latter plate adapted to move vertically on said brackets, and adjustable spring means mounted on each end of said plates for regulating said movement.

3. In a saw swage, the combination with a barrel, a swage die, a lever for operating said die, means for securing said swage in: position, spring means for regulating the impact of said die against the tooth under treatment and the strain on the top of the bearing teeth, comprising a bracket, a stationary bearing plate and a movable hearing plate secured thereto, said latter plate adapted to move vertically on said brackets, adjustable spring means mounted on each end of said plates for regulating said movement, and means for limiting the length thereof.

4. In a saw swage, the combination with a barrel, a swage die, a lever for operating said die, means for securing said swage in position, spring means for regulating the impact of said die against the tooth under treatment and the strain on thevtop of the bearing teeth, comprising a bracket, a stationary bearing plate and a movable bearing plate secured thereto, said latter plate adapted to move vertically on said brackets, adjustable spring means mounted on'each end of said plates for regulating the said movement, and an adjustable stop for limiting. the length thereof.

5. In a saw swage,.the combination with a barrel, a swage'die, a lever for operating said die, means for securing said swage in position, spring means for regulating the impact of said die against the tooth under treatment and the strain on the top of the bearing teeth, comprising a'bracket, a stationary bearing plate and a movable bearing plate secured thereto, said latter plate adapted to move vertically on said brackets, adjustable spring means mounted on each end of said plates for regulating said movement, and means for preventing lateral movement of said bracket.

6. In a saw swage, the combination with a barrel, a sWage die, a lever for operating said die, means for securing said sWage in position, spring means for regulating the impact of said die against the tooth under treatment and the strain on the top of the bearing teeth, comprising a bracket, a stationary bearing plate and a movable bearing plate secured thereto, said latter plate adapted to move vertically on said brackets, adjustable spring means mounted on each end of said plates for regulating said movement, means for limiting the length thereof, and means for preventing lateral movement of said brackets.

7. In a saW sivage, the combination With a barrel, a sivage die, a lever for operating said die, means for securing said sWage in position, spring means for regulating the impact of said die against the tooth under treatment and the strain on the top of the bearing teeth, comprising a bracket, a stationary bearing plate and a movable bearing plate secured thereto, said latter plate adapted to move vertically on said brackets, ad justable spring means mounted on each end of said plates for regulating said movement, an adjustable stop for limiting the length thereof, and means for preventing lat ral movement of said bracket.

8. In a saW sW-age, the combination With sWaging machinery and an adjustable bracket terminating in guide clamps, a pair of arms extending from said bracket, a movable plate carried by the base of said bracket, and spring means uniting the ends of said plate and arms.

9. In a saw sWage, the combination with sWaging machinery and an adjustable bracket terminating in guide clamps, a pair of arms extending from said bracket, a movable plate carried by the base of said bracket, a post mounted on said plate and adapted to slide Within said base, spring means uniting the ends of said plate and arms, and means carried by said base for limiting the upward movement of said plate.

10. In a saw sWage, the combination with swaging machinery and an adjustable bracket terminating in guide clamps, a pair of arms extending from said bracket, a movable plate carried by the base of said bracket, a post mounted on said plate and adapted to slide Within said base, retaining bosses mounted on the ends of said plates, springs fitting over said bosses and engaging the ends of said plate and arms, means carried by said base for limiting the upward movement of said plate, and means for adjusting the tension of said springs.

11. In a saw sWage, the combination With a barrel, a sWage die, a lever for operating said die, means for securing said swage in position, adjustable spring means comprising an adjustable bracket plate terminating in guide clamps, a pair of. arms extending from said bracket, a movable plate carried by the base of said bracket, and spring means uniting the ends of said plate and arms for regulating the impact of said die against the tooth under treatment and the strain on the top of the bearing teeth, and an adjustable stop for limiting the movement of said spring.

Signed by me at Chicago, Illinois, this 10th day of December, 1908.

EDDIE C. FILSTRUP.

Witnesses GLAREN on E. TAYLOR,

E. H. OLEGG.

Gopies of this patent may he obtained for five cents each, by'adslressing the Commissioner of Patents, Washington, D. G. 

